RE: [Opensdrm-general] New version of the document - not yet finished tough

[Gregor S. <gre...@av...>]

Panos=20&=20Carlos=20please=20find=20my=20comments=20below.

=20

Kind=20Regards,=20

Gregor

=20

________________________________

From:=20Carlos=20Serrao=20[mailto:car...@gm...]=20
Sent:=2018=20May=202006=2011:43
To:=20'Panos';=20Gregor=20Siegert
Cc:=20'OpenSDRM.=20SF'
Subject:=20RE:=20[Opensdrm-general]=20New=20version=20of=20the=20document=20=
-=20not=20yet=20finished=20tough

=20

Dear=20Panos,

It=20is=20nice=20to=20see=20that=20the=20list=20is=20finally=20getting=20s=
ome=20movement.

=20

Panos=20check=20my=20comments=20bellow.

=20

Best=20regards,

=20

Carlos=20Serr=E3o=20(MSc.)

ISCTE/DCTI=20Lecturer=20|=20Adetti=20Vice-President=20|=20PhD=20Student

Adetti/ISCTE/DCTI=20|=20Ed.=20ISCTE=20-=20Av.=20Das=20For=E7as=20Armadas,=20=
Lisboa=201600-082,=20LISBOA,=20PORTUGAL

car...@is...=20<mailto:car...@is...>=20,=20carlos.j.se=
rr...@gm...=20<mailto:car...@gm...>=20=20|=20Tel:=20=20+=20=
351=20217=20826=20480=20|=20+=20351=20217=20903=20989=20|=20Fax:=20+=20351=
=20217=20826=20488

MSN:=20p...@ho...=20<mailto:pon...@ho...>=20=20|=20Y=
!Messenger:=20carlosserrao=20|=20Skype:=20pontocom73

________________________________

From:=20Panos=20[mailto:pa...@ie...]=20
Sent:=20quinta-feira,=2018=20de=20Maio=20de=202006=2010:20
To:=20Gregor=20Siegert;=20Carlos=20Serrao
Subject:=20Re:=20[Opensdrm-general]=20New=20version=20of=20the=20document=20=
-=20not=20yet=20finished=20tough

=20

Hi=20Gregor

=20

Long=20time=20to=20hear=20from=20you=20:-)

=20

I=20fully=20agree=20and=20I=20am=20really=20happy=20I=20do=20have=20two=20=
technical=20gurus=20now=20to=20ask=20them=20all=20the=20difficult=20questi=
ons=20:-)

[Carlos=20Serrao]=20Well,=20you=20make=20strong=20and=20tough=20questions=20=
-=20I=20hope=20we=20eill=20be=20able=20to=20answer=20;-)

[Gregor=20Siegert]=20Well...

=20

Some=20players=20open=20up=20as=20integrated=20players=20with=20the=20brow=
ser=20(say=20MS=20Internet=20Explorer)=20How=20easy=20or=20difficult=20is=20=
this=20to=20be=20done=20with=20IM1/MOSES=20player

[Carlos=20Serrao]=20Panos,=20I=20hope=20you=20have=20read=20my=20previous=20=
email=20-=20I=20think=20I=20already=20answered=20to=20this=20-=20but=20fro=
m=20my=20previous=20experience=20in=20MOSES,=20I=20rather=20would=20like=20=
to=20forget=20IM1=20player=20-=20we=20already=20have=20the=20VLC=20player=20=
in=20our=20vision=20which=20supports=20MPEG-4=20and=20it=20can=20be=20alre=
ady=20integrated=20in=20the=20web-browser=20as=20well=20-=20and=20not=20on=
ly=20IE=20but=20also=20FF.

[Gregor=20Siegert]=20I=20agree=20completely=20to=20Carlos=20apart=20from=20=
the=20limited=20function=20set=20of=20the=20IM1=20player=20for=20two=20rea=
sons.=201)=20OpenSDRM=20is=20really=20open=20source=20the=20IM1/MOSES=20wi=
th=20its=20history=20is=20not.=202)=20VLC=20is=20a=20really=20excellent=20=
and=20stable=20player=20that=20is=20already=20widespread=20and,=20if=20uti=
lized,=20will=20open=20this=20system=20to=20a=20much=20larger=20community.=
=20=20=20=20

=20

I=20believe=20thsi=20is=20critical=20issue=20because=20achieves=20a=20grea=
t=20level=20of=20*interoperability*=20That=20is=20I=20do=20not=20need=20to=
=20download=20a=20new=20player

[Carlos=20Serrao]=20It=20is=20extremely=20critical.=20It=20is=20a=20very=20=
crucial=20point=20in=20interoperability=20terms.=20With=20VLC=20you=20don'=
t=20need=20any=20other=20-=20it=20also=20supports=20DVD=20movies=20and=20s=
o=20on...=20I=20think=20that=20VLC=20is=20(in=20my=20opinion)=20our=20best=
=20choice!

=20

Or=20the=20player=20should=20be=20preinstalled=20in=20order=20to=20open=20=
up=20as=20integrated=20when=20an=20appropriate=20stream=20encountered=20?

[Carlos=20Serrao]=20The=20player=20should=20be=20already=20on=20the=20syst=
em,=20if=20possible=20-=20at=20least=20it=20should=20be=20a=20requirement=20=
in=20order=20to=20access=20to=20DRM-protected=20content.

[Gregor=20Siegert]=20I=20believe=20that=20OpenSDRM=20as=20such=20does=20no=
t=20need=20a=20player,=20it's=20rather=20a=20platform=20to=20protect=20any=
=20kind=20of=20digital=20content=20in=20a=20very=20flexible=20way.=20A=20s=
pecific=20player=20for=20specific=20content=20gets=20relevant=20if=20restr=
icted=20access=20to=20content=20for=20rendering=20shall=20be=20given=20to=20=
the=20user.=20This=20may=20not=20the=20goal=20of=20all=20OpenSDRM=20users.=
=20Some=20may=20just=20want=20to=20employ=20simple=20watermarking=20strate=
gies=20and=20still=20allow=20full=20access=20to=20the=20content.=20No=20sp=
ecial=20player/rendering=20device=20should=20be=20needed=20to=20achieve=20=
that.=20In=20other=20words=20OpenSDRM=20must=20support=20players=20that=20=
don't=20integrate=20with=20the=20server=20framework.=20This=20is=20my=20op=
inion=20and=20I=20think=20it=20is=20a=20strategic=20question=20for=20what=20=
we=20want=20to=20achieve.=20

=20

=20Is=20then=20chicken=20and=20egg?

[Carlos=20Serrao]=20Don't=20think=20so.

=20

Can=20MS=20Media=20Player=20hijack=20an=20integrated=20player=20and=20play=
=20the=20content=20instead=20(of=20course=20no=20protection=20applies=20in=
=20these=20cases)=20?

[Carlos=20Serrao]=20Sure=20it=20can,=20if=20you=20give=20permissions=20for=
=20that.=20Windows=20Media=20Player=20is=20automatically=20configured=20to=
=20take=20over=20some=20of=20the=20more=20well-known=20content=20formats.=20=
But=20you=20can=20override=20this.=20And=20remember=20that=20for=20Europe,=
=20Microsoft=20in=20now=20obligated=20to=20supply=20a=20version=20of=20Win=
dows=20XP=20without=20the=20Windows=20Media=20Player=20(I=20think=20this=20=
is=20called=20Windows=20XP=20N=20???).

=20

From=20our=20own=20experience,=20since=20we=20have=20done=20this=20to=20th=
e=20Zinf=20player=20and=20MP3,=20protecting=20and=20integrating=20the=20pr=
otection=20on=20the=20player=20is=20not=20an=20easy=20task=20-=20that's=20=
why=20this=20is=20a=20task=20that=20needs=20a=20good=20knowledge=20of=20th=
e=20content=20formats=20and=20C/C++=20programming.=20I=20also=20think=20th=
at=20our=20strategy=20should=20be=20as=20much=20as=20possible=20to=20prese=
rve=20the=20content=20format,=20and=20only=20protected=20the=20content=20d=
ata.=20For=20instance,=20in=20the=20case=20of=20MP3,=20we=20have=20only=20=
ciphered=20the=20audio=20data,=20maintaining=20the=20MP3=20file=20structur=
e.

[Gregor=20Siegert]=20This=20also=20depends=20heavily=20on=20how=20open=20t=
he=20core=20of=20the=20player=20is.=20Usually=20a=20player=20architecture=20=
is=20working=20as=20a=20chain=20of=20different=20components=20that=20use=20=
intermediate=20formats=20on=20their=20interfaces.=20For=20instance=20MP3=20=
-->=20Decoder=20-->=20PCM=20-->=20Decoder=20-->=20Raw=20Audio=20Buffer.=20=
One=20has=20to=20break=20this=20chain=20and=20insert=20another=20component=
=20doing=20some=20of=20the=20DRM=20stuff,=20e.g.=20MP3=20-->=20Decoder=20-=
->=20PCM=20-->=20DRM=20stuff=20->=20Decoder=20-->=20Raw=20Audio=20Buffer.=20=
Winamp=20for=20instance=20works=20like=20that.=20Some=20players=20allow=20=
to=20break=20the=20chain=20some=20don't.

=20

Carlos=20who=20is=20currently=20on=20this=20reflector=20?

[Carlos=20Serrao]=20All=20the=20developers=20that=20are=20subscribed=20at=20=
opensdrm=20at=20sourceforce=20and=20you.

=20

Regards

Panos

=20

=20

=20

=20

=20

=09-----=20Original=20Message=20-----=20

=09From:=20Gregor=20Siegert=20<mailto:gre...@av...>=
=20=20

=09To:=20Carlos=20Serrao=20<mailto:car...@is...>=20=20;=20OpenSD=
RM.=20SF=20<mailto:ope...@li...>=20=20

=09Sent:=20Thursday,=20May=2018,=202006=2011:41=20AM

=09Subject:=20RE:=20[Opensdrm-general]=20New=20version=20of=20the=20docume=
nt=20-=20not=20yet=20finished=20tough

=09=20

=09Dear=20Carlos,

=09=20

=09Thank=20you=20for=20the=20OpenSDRM=20introduction,=20it's=20certainly=20=
a=20system=20of=20a=20long=20history.=20For=20the=20future=20I=20think=20t=
he=20following=20factors=20are=20key=20to=20the=20success=20of=20the=20sys=
tem;

=09=20

=09-=20Openness=20to=20as=20many=20content=20formats=20as=20possible

=09-=20Openness=20to=20as=20many=20content=20rendering=20devices=20(player=
s/viewers)=20as=20possible

=09-=20Easy=20extendibility=20&=20good=20documentation

=09=20

=09Having=20worked=20on=20the=20original=20architecture=20I=20have=20the=20=
following=20areas=20I=20would=20like=20to=20contribute:

=09=20

=09-=20Server=20platform=20enhancement,=20security=20of=20the=20SOAP/XML=20=
interfaces=20between=20the=20servers

=09-=20Cleaning=20up=20the=20code

=09=20

=09I=20am=20also=20interested=20in=20integrating=20another=20player=20with=
=20the=20system=20Videolan=20VLC=20may=20be=20an=20interesting=20candidate=
.=20=20=20

=09=20

=09Please=20use=20my=20Lycos=20address=20for=20any=20future=20emails:=20mr=
kl...@ly...

=09=20

=09Kind=20Regards,

=09Gregor

=09=20

=09
________________________________


=09From:=20o...@li...=20[mailto:opensdrm=
-ge...@li...]=20On=20Behalf=20Of=20Carlos=20Serrao=

=09Sent:=2016=20May=202006=2013:18
=09To:=20OpenSDRM.=20SF
=09Subject:=20[Opensdrm-general]=20New=20version=20of=20the=20document=20-=
=20not=20yet=20finished=20tough

=09=20

=09Dear=20all,

=09Here=20is=20a=20list=20of=20the=20vision=20document,=20it=20already=20c=
ontains=20some=20details=20about=20the=20future=20objectives=20of=20the=20=
OpenSDRM=20platform.

=09=20

=09It=20is=20not=20yet=20complete,=20but=20it=20already=20provides=20some=20=
more=20details=20about=20the=20work=20that=20needs=20to=20be=20done.=20Bas=
ed=20on=20this=20list=20I=20would=20like=20to=20know=20if=20you=20are=20in=
terested=20in=20working=20on=20any=20of=20the=20specific=20tasks=20I=20hav=
e=20identified=20-=20I=20hope=20so.=20So=20please=20manifest=20yourself.

=09=20

=09Best=20regards,

=09=20

=09Carlos=20Serr=E3o=20(MSc.)

=09ISCTE/DCTI=20Lecturer=20|=20Adetti=20Vice-President=20|=20PhD=20Student=


=09Adetti/ISCTE/DCTI=20|=20Ed.=20ISCTE=20-=20Av.=20Das=20For=E7as=20Armada=
s,=20Lisboa=201600-082,=20LISBOA,=20PORTUGAL

=09c...@is...=20<mailto:car...@is...>=20,=20carlos.j=
.se...@gm...=20<mailto:car...@gm...>=20=20|=20Tel:=20=20=
+=20351=20217=20826=20480=20|=20+=20351=20217=20903=20989=20|=20Fax:=20+=20=
351=20217=20826=20488

=09MSN:=20p...@ho...=20<mailto:pon...@ho...>=20=20|=20=
Y!Messenger:=20carlosserrao=20|=20Skype:=20pontocom73

=09=20

=09
=09______________________________________________________________________
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Security=20System.
=09For=20more=20information=20please=20visit=20http://www.messagelabs.com/=
email=20
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=09
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